A heat pump heats and cools by moving heat rather than making it, increasingly common in Ontario and BC as gas alternatives, and standard on many newer builds and retrofits. Like an AC condenser, it lives outside and its lifespan is roughly 10 to 16 years.
$8,000 to $20,000 installed in Ontario before rebates (currently up to $7,500)Address soonHeating
The ten second check
What else is typical in a house this age?
You are reading the heat pump age & replacement page. Type the year the house was built and I will tell you what else tends to be true at that age, what it costs, and what to ask. One number, ten seconds.
Free. No account. Educational and impartial, not a home inspection.
Why it matters
Replacement is a bigger number than most buyers expect: cold-climate air-source units run $8,000 to $20,000 installed in Ontario before rebates. The good news cuts the other way too, Ontario's Home Renovation Savings program currently offers up to $7,500 for qualifying cold-climate heat pumps (and more for ground-source), which materially changes the math on an aging unit. A 12-year-old heat pump isn't an emergency; it's a known future cost you negotiate against.
How to spot it
Read the manufacture date off the outdoor unit's data plate (it's in the model/serial, brand-specific, photograph the whole label). Look for rust on the cabinet, crushed fins, ice buildup outside of deep winter, and a unit that runs constantly without keeping up.
What it costs
$8,000 to $20,000 installed (Ontario, pre-rebate); net cost after current rebates often $4,000 to $12,500. Geothermal/ground-source systems are $25,000 to $45,000.
What to do
Budget and negotiate on units past ~10 years: get the age from the label, ask about service history, and check current rebate programs before pricing the replacement into your offer.
Education and triage, not a home inspection. Casaroo estimates age from your label photo and flags end-of-life risk, an HVAC contractor confirms condition, sizing, and what rebates apply.
Common questions
Do rebates change the math on an old heat pump?
Considerably. Replacement is $8,000 to $20,000 before rebates, and Ontario's program has offered up to $7,500 for qualifying cold-climate units, which can cut the net cost close to half. Programs change, so confirm what is running now before you build a number.
Is a twelve-year-old heat pump an emergency?
No. It is a known future cost, and that is exactly what makes it a negotiation item rather than a panic. Get the age off the data plate and price it into your offer the way you would a roof or a furnace.
Where do I find the age?
On the outdoor unit's data plate, usually encoded in the model or serial number. Photograph the whole label rather than trying to decode it on the spot, because the encoding is brand-specific.
Will my electrical service support a heat pump?
That is the question people skip. A heat pump is a significant electrical load, and an older 60-amp or 100-amp service may need upgrading first, which is a separate cost. Ask an HVAC contractor and an electrician together.
Last reviewed 2026-07-10.
This guide is general education, not a home inspection and not advice for your specific property. Always
consult the appropriate licensed professional, and get a licensed home inspection before you remove conditions
or buy. Cost ranges are 2026 estimates that vary by region, size, and access; confirm specifics with a
qualified professional.